[INFO] fetching crate utf8-io 0.19.1...
[INFO] checking utf8-io-0.19.1 against try#7014e13d5becc920d4bea3cd87942c8a13d359bf+rustflags=-Dtail_expr_drop_order for pr-129864
[INFO] extracting crate utf8-io 0.19.1 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate utf8-io 0.19.1 on toolchain 7014e13d5becc920d4bea3cd87942c8a13d359bf
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate utf8-io 0.19.1
[INFO] finished tweaking crates.io crate utf8-io 0.19.1
[INFO] tweaked toml for crates.io crate utf8-io 0.19.1 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate crates.io crate utf8-io 0.19.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2adb626d9edb06c6266dd8a3c0c962dca8038a9aae65d46d7bef15edd57a5536
[INFO] running `Command { std: "docker" "start" "-a" "2adb626d9edb06c6266dd8a3c0c962dca8038a9aae65d46d7bef15edd57a5536", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2adb626d9edb06c6266dd8a3c0c962dca8038a9aae65d46d7bef15edd57a5536", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2adb626d9edb06c6266dd8a3c0c962dca8038a9aae65d46d7bef15edd57a5536", kill_on_drop: false }`
[INFO] [stdout] 2adb626d9edb06c6266dd8a3c0c962dca8038a9aae65d46d7bef15edd57a5536
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Dtail_expr_drop_order" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 908f9511e748c47d2fc1c0eb274de7d1c96b80983c742f493c3616e8778c5837
[INFO] running `Command { std: "docker" "start" "-a" "908f9511e748c47d2fc1c0eb274de7d1c96b80983c742f493c3616e8778c5837", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]    Compiling io-lifetimes v2.0.1
[INFO] [stderr]    Compiling io-extras v0.18.0
[INFO] [stderr]    Compiling layered-io v0.23.0
[INFO] [stderr]     Checking duplex v0.16.0
[INFO] [stderr]    Compiling anyhow v1.0.71
[INFO] [stderr]     Checking os_pipe v1.1.4
[INFO] [stderr]     Checking utf8-io v0.19.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: methods `inner` and `into_inner` are never used
[INFO] [stdout]   --> src/utf8_input.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub(crate) trait Utf8ReaderInternals<Inner: Read>: Read {
[INFO] [stdout]    |                  ------------------- methods in this trait
[INFO] [stdout] 13 |     fn impl_(&mut self) -> &mut Utf8Input;
[INFO] [stdout] 14 |     fn inner(&self) -> &Inner;
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 15 |     fn inner_mut(&mut self) -> &mut Inner;
[INFO] [stdout] 16 |     fn into_inner(self) -> Inner;
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `inner` is never used
[INFO] [stdout]   --> src/utf8_output.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub(crate) trait Utf8WriterInternals<Inner: Write>: Write {
[INFO] [stdout]    |                  ------------------- method in this trait
[INFO] [stdout] 10 |     fn impl_(&mut self) -> &mut Utf8Output;
[INFO] [stdout] 11 |     fn inner(&self) -> &Inner;
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `inner` and `into_inner` are never used
[INFO] [stdout]   --> src/utf8_input.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub(crate) trait Utf8ReaderInternals<Inner: Read>: Read {
[INFO] [stdout]    |                  ------------------- methods in this trait
[INFO] [stdout] 13 |     fn impl_(&mut self) -> &mut Utf8Input;
[INFO] [stdout] 14 |     fn inner(&self) -> &Inner;
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 15 |     fn inner_mut(&mut self) -> &mut Inner;
[INFO] [stdout] 16 |     fn into_inner(self) -> Inner;
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `inner` is never used
[INFO] [stdout]   --> src/utf8_output.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub(crate) trait Utf8WriterInternals<Inner: Write>: Write {
[INFO] [stdout]    |                  ------------------- method in this trait
[INFO] [stdout] 10 |     fn impl_(&mut self) -> &mut Utf8Output;
[INFO] [stdout] 11 |     fn inner(&self) -> &Inner;
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.62s
[INFO] running `Command { std: "docker" "inspect" "908f9511e748c47d2fc1c0eb274de7d1c96b80983c742f493c3616e8778c5837", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "908f9511e748c47d2fc1c0eb274de7d1c96b80983c742f493c3616e8778c5837", kill_on_drop: false }`
[INFO] [stdout] 908f9511e748c47d2fc1c0eb274de7d1c96b80983c742f493c3616e8778c5837